MULTIPLE CHOICE The dimensions of a playground are represented by a width of 9x + 1 feet and a length of 5x – 2 feet. Which is the expression that represents the area of the playground?
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Find the value of the variable and the length of each secant segment.

1. writing an equation for an exponential function by 2. a piece of paper that is 0.6 millimeter thick is folded. write an equation for the thickness t of the paper in millimeters as a function of the number n of folds. the equation is t(n)= 3. enter an equation for the function that includes the points. (-2, 2/5) and (-1,2)

Varies inversely with x. if y=8.5 when x=-1 find x when y=-1